From patchwork Sat Feb 17 00:10:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13561087 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E32767E8F; Sat, 17 Feb 2024 00:11:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708128667; cv=none; b=cQtUVzx/ZsORBVU4jcESRADp2nUut9XkzOAvIMbIKsfFrOjwoT8kFx00zSj6zcdVZoLU8afIsTOsZx6N/bxFUTLewsl4Gv/D4WZgeJp92C5bYy94/MG8UWsSTk4gEuNDLGrndyr5UuMd92CzSF8kjIDvKEiGgZv+E8TtxtlgskI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708128667; c=relaxed/simple; bh=LtZV5CUXs48ixayeIGQ76IReB2d+LrWonLDPetBVXE0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=shIZDqFom7qrWeb8p2MsnWz9dRsDWikLA0g8gxY8txZPieriUiAnUHiolqoRePLdjjLXZG1Rng/7O9ELnO14E7LB/ypWHgqGCJ/3J7AmM7HHqBvnn3AaKnMyHQp9QrzkFiA8kf/D+atKNJIuh7mkm3KIX7oTJLcUAX9RncjVFuM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=or+aix3h; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="or+aix3h" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41H065j5020996; Sat, 17 Feb 2024 00:10:44 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=HUDTdfzQUbpe9qfiFp0b KWsasPQJ9GQd8pkL2h1cGwI=; b=or+aix3hT9BP3goeJNPDZrnnXSqUNTd1A8w/ 8wBTipogKwm1tiOLdAZFUPrZ0n7qwFj5pdZLvitzNmCuz+3Mr5Eno0R5cA8Lc98V pXDyX9SASikKR8wqaeCyNSPfAEpPPUNWjq2K9kkhH1SG1Z+mowj36qUJhjmHNVaU b/5fpcyYRPlFzZ+SyCQmP6B+T3atIxFEXo8I5ISF632Vi5mxuXt2rs1atYiIL9+G 9pBgQjHNyb9iZ9UNJHFTYJrOZxqLQ8WqxlweMhxEPpD/N344xhFmeyZ1C9UvJVJc xcfi3Ft9FB5DD+6KDzTNhvvEgF38WgPoNPq2/ut5WBt4BIB+lg== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wa6nk9e63-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 17 Feb 2024 00:10:43 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41H0Agu0017454 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 17 Feb 2024 00:10:42 GMT Received: from hu-wcheng-lv.qualcomm.com (10.49.16.6) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Fri, 16 Feb 2024 16:10:42 -0800 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v17 45/51] ASoC: usb: Fetch ASoC sound card information Date: Fri, 16 Feb 2024 16:10:11 -0800 Message-ID: <20240217001017.29969-46-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240217001017.29969-1-quic_wcheng@quicinc.com> References: <20240217001017.29969-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Z2opX41IYutNUmUNrEkAxgDHGGSlB4cJ X-Proofpoint-ORIG-GUID: Z2opX41IYutNUmUNrEkAxgDHGGSlB4cJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-16_23,2024-02-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 lowpriorityscore=0 spamscore=0 bulkscore=0 mlxscore=0 adultscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401310000 definitions=main-2402160189 For USB sound to expose mixer controls to fetch information about the ASoC sound card, add an API that returns the platform sound card number that is registered with SOC USB. Knowing this allows for applications to further query about the offload status. Signed-off-by: Wesley Cheng --- include/sound/soc-usb.h | 6 ++++++ sound/soc/soc-usb.c | 26 ++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/include/sound/soc-usb.h b/include/sound/soc-usb.h index 3137f538270f..56df503c4ecf 100644 --- a/include/sound/soc-usb.h +++ b/include/sound/soc-usb.h @@ -85,6 +85,7 @@ int snd_soc_usb_find_format(int card_idx, struct snd_pcm_hw_params *params, int snd_soc_usb_connect(struct device *usbdev, struct snd_soc_usb_device *sdev); int snd_soc_usb_disconnect(struct device *usbdev, struct snd_soc_usb_device *sdev); void *snd_soc_usb_find_priv_data(struct device *dev); +int snd_soc_usb_device_offload_available(struct device *dev); int snd_soc_usb_prepare_session(struct snd_soc_usb *usb, int card_idx, int pcm_idx); int snd_soc_usb_shutdown_session(struct snd_soc_usb *usb, int session_id); @@ -128,6 +129,11 @@ static inline void *snd_soc_usb_find_priv_data(struct device *dev) return NULL; } +static inline int snd_soc_usb_device_offload_available(struct device *dev) +{ + return -ENODEV; +} + static inline int snd_soc_usb_prepare_session(struct snd_soc_usb *usb, int card_idx, int pcm_idx) { diff --git a/sound/soc/soc-usb.c b/sound/soc/soc-usb.c index 27c76a33da32..53c4e399909e 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -457,6 +457,32 @@ int snd_soc_usb_find_format(int card_idx, struct snd_pcm_hw_params *params, } EXPORT_SYMBOL_GPL(snd_soc_usb_find_format); +/** + * snd_soc_usb_device_offload_available() - Fetch BE DAI link sound card + * @dev: the device to find in SOC USB + * + * Finds the component linked to a specific SOC USB instance, and returns + * the sound card number for the platform card supporting offloading. + * + */ +int snd_soc_usb_device_offload_available(struct device *dev) +{ + struct snd_soc_usb *ctx; + struct device_node *node; + + node = snd_soc_find_phandle(dev); + if (IS_ERR(node)) + return -ENODEV; + + ctx = snd_soc_find_usb_ctx(node); + of_node_put(node); + if (!ctx) + return -ENODEV; + + return ctx->component->card->snd_card->number; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_device_offload_available); + /** * snd_soc_usb_allocate_port() - allocate a SOC USB device * @component: USB DPCM backend DAI component